Guides

How the formats work

What the file actually is, and which conversion keeps the picture instead of quietly damaging it.

• What is a JFIF file and how to convert it to JPG

  JFIF is already JPEG data. Learn why browsers save .jfif, how .jpeg and .jpe differ, and how to turn them into .jpg without recompressing.

• How to convert PNG to PDF (and keep quality)

  Place PNG images on PDF pages without uploading them. How transparency, page size, and embedding affect quality, and when a JPG is the better source.

• How to convert a PDF to PNG images

  Turn each PDF page into a PNG in the browser. What you gain, what you lose versus the original PDF, and how scale and multi-page ZIP downloads work.

• What is a TIFF file and why won't it open?

  Why a TIFF will not open in a browser or phone, how multi-page and 16-bit files differ, and a practical way to get a JPG from a standard 8-bit TIFF.